pennsylvania avenue is set for the inaugural parade, delayed like the capitol ceremony because they're never held on a sunday. police from around the nation will bolster security, grass protectors are down on the mall. the weather's mild. 800,000 people expected tomorrow. some saw the president today. when the obamas attended church. >> he started leaning over to us and we saw him. we were so excited to see him. >> reporter: the commander in chief laid a wreath at the tomb of the unknowns, a reminder of his burden, and of our two centuries of democracy. the inauguration is not just an obama party. >> whether you agree with the president or not, we have freedom to be a part of it. >> reporter: and the celebration of america is on. again, it was mild here. but it won't be mild tomorrow. once again, washington will be in a freeze for inauguration day. dawn here tomorrow, diane, maybe in the upper 20s. steve handelsman. >> steve, i remember being back with you there four years ago and it was awfully chilly back there then as well. stay warm. >> we'll try. >> we'll have extensive coverage o